Tip-Enhanced Near-Field Raman Spectroscopy Probing Single Dye-Sensitized TiO2 Nanoparticles
The correlated metallic tip-enhanced Raman spectroscopy and atomic force microscopy (AFM) technique was used to characterize an interfacial electron transfer system of dye-sensitized titanium oxide (TiO2) nanoparticles. We have obtained the near-field Raman spectra that are associated with the photo-induced charge transfer reaction in Ru(4, 4?-dicarboxy-2,2?-bipyridine)2(NCS)2- sensitized TiO2 single nanoparticles. This method demonstrates that tip-enhanced near-field Raman spectroscopy is an effective approach for probing in homogeneous interfacial electron transfers with nanoscale spatial resolution.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 878257
- Report Number(s):
- PNNL-SA-46223; APPLAB; 6506; 6507; KC0301020; TRN: US0602289
- Journal Information:
- Applied Physics Letters, Vol. 88, Issue 9; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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